The Si5332 family is optimized to provide reference timing for the high-speed serial interconnects used in next-generation data centers. The new product family supports PCI Express, the long-term dominant standard for interconnecting microprocessors, networking, storage and memory. The Peripheral Component Interconnect Special Interest Group (PCI-SIG) recently introduced PCI Express 4.0 (revision 0.9), which supports 16 gigatransfers per second (GT/s) data rates. The Si5332 family fully complies with PCI Express 4.0 while providing 60 percent jitter margin to PCIe Gen 4 specifications.

Other industry consortia, including CCIX, Gen-Z, NVLink and OpenCAPI, are working on alternate serial interconnect technology supporting speeds up to 25 GT/s. In addition to requiring low jitter clocks, some of these solutions require spread spectrum reference clocks. The Si5332 family provides a versatile solution supporting dual independent spread spectrum paths. Spread spectrum clock generation is enabled on a per output basis, enabling a single clock device to simultaneously support a mix of spread and non-spread clocks. Collectively, these features make the Si5332 family the best solution to provide reference timing for high-speed serial interconnects.

Each Si5332 clock output can be configured as LVPECL, LVDS, HCSL, or LVCMOS and supports 1.8 V to 3.3 V, eliminating the need for discrete format or voltage translators and simplifying interfacing to FPGAs, ASICs and SoCs. In addition to I2C control, the clocks support user-defined control pins that can be used to quickly configure each device without the need of a serial interface. Like other Silicon Labs timing products, the Si5332 clocks are configurable and customizable using flexible ClockBuilder Pro software.

Pricing and Availability
Samples and production quantities of the Si5332 any-frequency clocks are available now. Samples ship in two weeks, and production quantities are available in four weeks. Pricing in 10,000-unit quantities starts from $4.25 (USD) for the 6-output device to $4.90 (USD) for the 12-output clock. Silicon Labs’ new Si5332-6EX-EVB, Si5332-8EX-EVB and Si5332-12EX-EVB development kits, priced at $149 each (USD MSRP), provide quick, simple device evaluation.